Re: pinhole Surface waves from Sumatra M 9.0

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Thu Jan 06 2005 - 09:01:30 PST


From: "Paul Doherty" <pauld@exploratorium.edu>
Subject: Re: pinhole Surface waves from Sumatra M 9.0
Date: Thu, 06 Jan 2005 09:01:30 -0800
Message-ID: <web-8686348@exploratorium.edu>

Here is the location of this fascinating data plot.

http://www.iris.edu/about/ENO/iow.htm

Paul Doherty

On Thu, 6 Jan 2005 08:55:12 -0800
  Deb Hunt <dhunt@exploratorium.edu> wrote:
>Dear John and Jan,
>Looks like the file location is on your local hard
>drive.
>Can you give a url we can all access?
>Thanks,
>Deb
>
>On Jan 6, 2005, at 6:41 AM, John or Jan Lahr wrote:
>
>If you haven't taken a look at the IRIS "Image of the
>Week" yet,
>check out this page:
>file:///C:/education/Sumatra%209.0/surface_waves.htm
>
>The image shows seismic records from stations distributed
>around
>the globe and surface waves that traveled twice around!
>
>Questions to think about -- Why does the y-axis stop at
>180 degrees?
>Why would the amplitude of the surface waves fall off
>around 90 degrees
>and then increase at 180 degrees again?
>
>Cheers,
>John
>
>
>
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